1. Shay Fields

Shay Fields' visit to Boulder must have gone relatively well, because the 2014 Colorado football target officially decommitted from Southern California on Tuesday. The Rivals four-star receiver took to Twitter to make his announcement.

I think it's about time for me to say that I have decommitted from USC for personal reasons

Fields later tweeted that it's down to the 3 B's: "Berkeley, Boise, Boulder" ... no word if that's in any order. Fields will take an official visit to Cal this weekend and Boise is still in the race. Colorado has a fight on its hands with 15 days to Signing Day.

In other official action, CU 2014 commit running back Jomon Dotson visited Washington last weekend. He told both Rivals and Scout that it went well and he expects to make a decision this week.

247 Sports reports Colorado head coach Mike MacIntrye and running backs coach Klayton Adams will be in California later this week for an in-home visit with Dotson. Dotson committed to Colorado on Oct. 6 and rushed for 2,004 yards on 189 carries with 26 touchdowns as a senior at American Canyon High School.

2. New offer

According to 247Sports' Kipp Adams, Colorado football has extended an offer to 2015 cornerback Kendall Sheffield out of Missouri City, Texas. The Rivals four-star, Scout five-star prospect has 17 offers, including many of the nation's top programs; he's elite. ESPN ranks Sheffield as the No. 13 overall player for 2015 and the No.1 corner.

The 6-foot, 165-pound junior with a 4.4 40-time -- as you likely guessed -- is a burner on the track at Fort Bend Marshall High School, taking second in the 110m hurdles at state as a sophomore. Check out his sophomore football highlights and an interview below.

3. Hill to Columbia

BoCoPreps.com editor Pat Rooney reports Fairview High School's Anders Hill is heading to the Ivy League with a commitment to play for Columbia. The Knights' standout quarterback threw for 3,878 yards with 36 touchdowns and 10 interceptions as a senior. 1,860 of those yards and 16 touchdowns went to Hill's main target, wide receiver Sam Martin, who committed to Miami of Ohio over the weekend.